. Bulletin of the British Museum (Natural History), Geology. . Fig. 8. Gonyaulacysta ehrenbergii sp. nov. Tabulation and the archaeopyle formation of the holotype (plate 3" is missing). Left, ventral view ; right, dorsal view, x c. 1200. plates 4", 5", 6". The precingular plates are generally large, plates 5" and 6" being reduced to accommodate the intercalary plate ia. Seven postcingular plates are present : Plates 1" ' and 2" ' are reduced because of the large intercalary plate ip ; plates 6" ' and 7" ' are also reduced, since the large antap
. Bulletin of the British Museum (Natural History), Geology. . Fig. 8. Gonyaulacysta ehrenbergii sp. nov. Tabulation and the archaeopyle formation of the holotype (plate 3" is missing). Left, ventral view ; right, dorsal view, x c. 1200. plates 4", 5", 6". The precingular plates are generally large, plates 5" and 6" being reduced to accommodate the intercalary plate ia. Seven postcingular plates are present : Plates 1" ' and 2" ' are reduced because of the large intercalary plate ip ; plates 6" ' and 7" ' are also reduced, since the large antapical plate 1" " occupies a large area. The presence of posterior intercalary plate ipv and the sulcal plates render the sulcus short and narrow. Remarks. Five specimens of this infrequent species were observed ; all of them. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). London : BM(NH)
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